Bunch-building attachment for spinning frames



C. A. PIERCE. BUNCH BUI L DING ATTACHMENT FOR SPINNING FRAMES. APPLICATION FILED MAY 21, 192:.

1,427, 97, Patented Aug. 29, 1922.

InvenTor. Clarence A. Pierce byMMkM ATTys.

UNITED stares PATENT OFFICE...

CLARENCE A. PIERCE, {3F LOU/ELL, IIIASSACHUSETTS.

BUNCH-BUILDING ATTACHMENT FOR SPINNING FRAMES.

Application filed May 21,

To all whom it may concern:

Be it known that I, CLARENCE fr. Prunes, a citizen of the United htates and resident of Lowell, county of Middlesex. State of Massacl'iusetts. have invented an improvement in Buncli-Building Attachments for Spinning Frames, of which the following description, in connection with the accompanylng drawing, is a specification, like characters on the drawing representing like tures will be pointed out. in the appended claims.

Fig. 1 showsin perspective a portion of a spinning frame having. my improved bunch builder'appliede Fig. 2 isa side view of the bunch-building attachment.

Fig. 3 is an edge view.

Fig. 4- is a section on the line 4 l, Fig. 2.

In the drawings I have shown a sufficient portion only of a spinning frame to illustrate .how my invention is applied and 1 indicates a portion of the frame of the spinning machine, 2 is the spindle rail which rotatably supports the spindles 3., and 4C is the ring rail on which the spinning rings 5 are mounted. This ring rail has a vertical movement which is controlled by the usual builder motion. not shown, and by which the desired transverse is given to the yarnas it is wound on the bobbins 6. The ring rail is mounted on a plurality of posts one of which is shown at 7, said posts being conneetedto rocker arms that are in turn pivoted to the frame 1, one of the rocker arms being shown at 8 and it being pivoted at 9. As stated above the vertical and rising falling movement of the ring rail l is controlled by the builder motion.

In operating a spinning frame it is a common practice for the operator to pump the ring rail 4 by foot power when the ma- Speci ic-at'lon of Letters Patent.

Patented Aug. 29, 1922.

1921. Serial No. 471,418.

chine is started up with empty bobbins in it thereby to build a bunch on each bobbin near the heel thereof. The position on the bobbin in which the bunch will be built, as well as the character of the bunch, is determined by the pumping motion which is given to the ring rail by the operator. These spinning frames are usually provided with a treadle connected to one of the arms 8 and by which the ring rail may be lowered, said rail being raised automatically by a suitable counterweight.

In order to assist the operator in forming abunch by this pumping action I have provided a bunch-building attachment adapted to be applied to the ring rail and spindle rail and which limits the upward movement of the ring rail so that when this attachment is applied the extent of upward movement of the ring rail is limited independently of the pumping action of the operator. This insures that the bunch will always be located at the same point and will be of a uniform character.

This bunch-building attachment comprises two clamping arms 10 and 11 which yieldingly connected together but which are constructed so that the extent of their separating movement is limited, and which are adapted to be placed over the ring rail 4 and spindle rail 2 so that said rails are confined between the arms.

hen the bunch-building attachment is applied to the spinning frame the arms will separate from each other as the ring ra-il rises until they reach the limit of their separating movement when they will operate to prevent further rising movement of the ring rail and as the ring rail moves down they will close together by reason of the yielding connection between them.

These clamping arms may be yieldingly connected in various ways without departing from the invention. In the construction shown the arm 10 is provided with a stem 12 having a slot 13 therein in which the arm 11 is slidably mounted and said arm is acted on by suitable springs 14: which are confined between the arm 11 and a foot15 extending from the lower end of the stem 12. The springs 1.4; normally tend to move the arm 11 upwardly toward the arm 10 and thus serve to yieldingly connect the arms so that they will retain their position on the two rails 2 and 4i notwithstanding the relative movement of said rails. To guide build the bunch on the bobbins the s rin s uidin ins 16 are secured to n b b l I stop 18 is shown a U-shaped member embracing the stem and as being clamped in adjusted position by a clamping bolt 19 which e'tends through the slot.

The .7 m 12 is shown adjustable in length and this i. accomplished by making said s 111 in t n parts 20 and 21, the part 20 bein rigid with the arm 10 and having a general ll-shape in cross section and the part 21 being" rigid with the toot l5 and fitting within the part 90. These two pa ts can be adjusted lon itudinally and are l id in their adjusted pot. tion by a clamping bolt 22.

In usingg my improved lninch-building attachment the operator will first depress the ring rail l by means of the toot treadle and will then the attachment in place with the arms ll rail 2 and ringra-i The springs 16 allow the arms to be separated sufliciently to be inserted over the rails 52 and 4e. Vfhen the spring released it closes the arms together thus causing the arm 10 to engage the top of the ring rail and the arm 11 to engage the bottom of the spindle rail. As the op.- erator per-terms the pumping operation to 6 the springs it will yield or be compressed as the rail el rises as shown in dotted lines Fig. 2 and will be extended as the ring rail falls. As the ring rail 4 rises the arms will separate until the separating movement is limited by the ena nt oi the arm 11 with the stop 18, such stop thereby preventing; further upward movement oi? the ring rail. The ring rail will. thus remain staticuar momentaril thus windingthe bunch on the bobbin until it is again depressed. This attachment thus limits the vertical movement of the ring rail during the building of the bunch and causes auniform bunch to be built always at the same spot on the bobbin.

After the bunch of the desired size has been wound then the operator will withdraw the attachment from the spindle rail and and 10 embracing the spindle rino' rail thus allowing; the spinning frame to function. in its usual way to wind the yarn on the bobbin 6. I

in e drawings I have illustrated the in one position in full lines and in position in dotted lines, When the stop is in the dotted line position then a r l iv sliortbunch will be made but when the )p i8 is in the full line position a lor ibunch will be formed. his stop 18 be adjusted to correspond to the length size of bunch desired.

1 claim:

l. in a spinning "frame, the combination with a spindle rail, of a ring rail movable tows-rd and from the spindle rail, and a bunch-building; attachment adapted to be temporarily applied to the spindle rail and ring rail, said attachment comprising two movable toward and from. each other and between which the spindle rail and the ring rail are received and a spring device acting on said arms and holding them yielding v in engagement with said rails, said arms h aving' a limited separating movement.

2. In a spinning; frame, the combination with aspindle rail, of a ring rail movable toward and from the spindle rail, and a lmnclrbuilding attachment adapted to be temporarily applied to the spindle rail and ring rail and comprising two yieldingly connected arms between which said rails are received and a stop to limit the separating movement of the arms.

' A bunch-building attachment for spinning anies comprising an arm adapted to engage the top of the ring rail and provided with a slotted stem at right angles thereto,

a second arm operating in said slot and adapted to engage the under side of the spindle rail, springs normally tending to move said arms toward each other, and an adjustable stop limiting the opening movement not said arms. I

l. it, bunch-building attachment for spinning lira-mes comprising two arms, one adapted to engage the top of the ring rail and the other adapted to engage the under side oi the spindle rail, a spring device acting on said arms and tending to urge them toward each other, and a stop device to limit the separating movement of the arms.

In testimony whereof, I have signed my name to this specification.

CLARENCE A. PIERCE. 

